Other than by observing the white gill spots on the males a the plumpness of the females there is no specific action that I'm aware of that indicates that goldfish are about to spawn. They normally do so at dawn/daybreak in springtime. When they do spawn though (If you get up early enough) you will see the males driving the females and much, chasing, splashing and jumping going on.
Swim around MORE than useuel.
Spawning is breeding goldfish
No, it is impossible. Goldfish are coldwater and have different spawning techniques than bettas.
They could well be spawning at this time of year.
Several thousand in one spawning.
Fish of all kinds (including goldfish) will pick on a weak fish if there is one in their vicinity. In general goldfish are peacefull. During spawning season (spring) though, the males will be seen nudging the females in order to get them spawning. So no, they do not normally 'pick on their tank mates'.
Goldfish don't get pregnant. When a Goldie is in spawning condition a female will get fat with eggs, then "lay" them and the male will fertilise them externally. It's only when a Goldie is a couple of years old and in spawning condition that they get like this.
Goldfish will start to eat their eggs once they have finished spawning them. They do not look after their eggs at all.
Goldfish "spawn" they do not get pregnant because they are egg layers and the eggs are fertilised after they are released from the females body. Goldfish will eat their eggs if they can find them, so either the fertilised eggs or the goldfish should be removed once 'spawning' is completed if you wish to raise some of the young. BTW 1 goldfish spawning can produce many thousands of babys.
One single spawning can be as large as several thousand ova.
When I feed my goldfish they act excited.
If one is chasing another then they most probably are spawning.
Goldfish do not look after their eggs or babies. They will eat their eggs if they can find them so the breeders should be removed once spawning has finished.